The Skeletons are exactly as they are named. The enemies come in the variations of Warriors who wield swords and deal only Melee Damage, Archers that carry crossbows, and Platemail Skeletons who have extra armor and are prone to corrosive damage.

A Skeleton with a blue sword embedded inside it and cannot be killed until the sword is pulled out. If you decide not to pull the sword out the skeleton will revive and also will level up this can be repeated until it is level 74 (UVHM) creating a reasonably challenging opponent.